KABA is really uncommon for residential units in the US. But you probably could optically measure the key, since the dimple's diameter shows the depth.
It's always seemed like a safety hazard to me with interior-locking doors. When I stayed with a friend in Paris, I was locked inside their flat when they left early for work.
It's always seemed like a safety hazard to me with interior-locking doors. When I stayed with a friend in Paris, I was locked inside their flat when they left early for work.